At the beginning of the article, there will be three protagonists, one girl and two boys who are childhood sweethearts. The three of them all have abilities that are different from ordinary people, and they are a famous trio for solving crimes. Later, another man was added, making it a foursome. Many suspense cases have been solved. The abilities of the four of them also caused some minor troubles for themselves. Especially the heroine Huangfu Mixi, who almost paid with her life for this. In the end it was a perfect ending.